JP2509896B2 - Detergent composition - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention has excellent detergency as a detergent composition, has a mild action on the skin, and has a smooth feeling after washing,
The present invention relates to a detergent composition having a good feeling in use.

[0002]

2. Description of the Related Art
Anionic surfactants such as alkyl sulfates and polyoxyethylene alkyl ether sulfates are widely used as surfactants for detergents. However, these anionic surfactants have poor skin irritation and are not satisfactory. On the other hand, a succinic acid-based surfactant is used as a surfactant used because it has a mild action on the skin, but it is unsatisfactory because of poor cleaning power and foaming power. Further, the highly safe amino acid-based surfactant is satisfactory in detergency and foaming power, but has a defect that the feeling after washing is slimy.

The present invention has been made in view of such drawbacks of the conventional products, and it is N-acyl glutamate or N-acyl glutamate.
-A cleansing composition that takes advantage of the characteristics of acyl aspartate, does not have a dry feel after washing, has excellent detergency, and has a mild action on the skin, and has a good feeling in use. It is intended to be provided.

[0004]

The present invention has the general formula (A)

Embedded image R—O— (CH ₂ CH ₂ O) n—CH ₂ COOH (wherein R is an alkyl group having 12 to 18 carbon atoms, and n is 2 to 2).
The number of 10 is shown. ) Polyoxyethylene alkyl ether acetic acid represented by the formula (1) is neutralized with an alkali metal, ammonium or alkanolamine at a neutralization rate of 30 to 70%;

Embedded image (Wherein R is an alkyl group or an alkenyl group having 7 to 21 carbon atoms, M ₁ and M ₂ are hydrogen or Na ⁺ , K ⁺ , NH ₄ ⁺ ,
Alternatively, it represents an alkanol ammonium ion. However, M ₁ and M ₂ are not hydrogen at the same time. ) N-acyl glutamate represented by the general formula (C)

[Chemical 6] (In the formula, R'is an alkyl group or an alkenyl group having 7 to 21 carbon atoms, M ₃ and M ₄ are hydrogen or Na ⁺ , K ⁺ , N
Represents H ₄ ⁺ or alkanol ammonium ion. However, M ₃ and M ₄ are not hydrogen at the same time. And N-acyl aspartate represented by the formula (1).

Examples of the polyoxyethylene alkyl ether acetic acid represented by the above general formula (A) in the present invention include polyoxyethylene (2) lauryl ether acetic acid, polyoxyethylene (5) tridecane ether acetic acid and polyoxyethylene. (4.5) myristyl ether acetic acid, polyoxyethylene (8) palmityl ether acetic acid, polyoxyethylene (10) stearyl ether acetic acid and the like.

In the detergent composition of the present invention, the polyoxyethylene alkyl ether acetic acid represented by the general formula (A) is added with an alkali metal such as sodium or potassium and ammonium, or monoethanolamine, diethanolamine, triethanolamine. Neutralized with an alkanolamine such as alkanolamine at a neutralization rate of 30 to 70%, that is, polyoxyethylene (2) sodium lauryl ether acetate, polyoxyethylene (4.5) sodium tridecane ether acetate, polyoxyethylene ( 6) Polyoxyethylene alkyl ether acetates such as ammonium myristyl ether acetate, polyoxyethylene (8) palmityl ether acetate diethanolamine, and polyoxyethylene (10) stearyl ether acetate triethanolamine are used.

In the present invention, the neutralization rate of the polyoxyethylene alkyl ether acetate is 30 to 70%, preferably 40 to 60%. If the neutralization rate is less than 30%, the feeling of use is poor and good results cannot be obtained, and if it exceeds 70%, the detergency is poor and it is not preferable.

The amount of the polyoxyethylene alkyl ether acetate used in the present invention is generally 1 to 20% by weight, preferably 3 to 15% by weight. If the amount is less than 1% by weight, the detergency is poor and good results cannot be obtained, and if it exceeds 20% by weight, the action on the skin tends to be strong.

The N-acylglutamate represented by the general formula (B) in the present invention is N-lauroyl-
L-Glutamic acid sodium, N-coconut oil fatty acid acyl-L-glutamic acid triethanolamine, N-myristyl-L-glutamate potassium, N-coconut oil fatty acid-
Examples include hardened tallow fatty acid acyl-L-glutamate ammonium and the like.

Examples of the N-acyl aspartate represented by the general formula (C) in the present invention include sodium N-lauroyl-L-aspartate, N-coconut oil fatty acid acyl-L-aspartate triethanolamine and N-.
Examples thereof include myristyl-L-aspartate potassium, N-coconut oil fatty acid / hardened tallow fatty acid acyl-L-ammonium aspartate, and the like.

The cleaning composition of the present invention contains these N-
An acylglutamate or an N-acyl aspartate is blended, but the blending amount is generally 1 to 20% by weight.
And preferably 3 to 15% by weight. Compounding amount is 1
If it is less than 10% by weight, the detergency is poor and good results cannot be obtained.
If it exceeds 20% by weight, the feeling after washing tends to be slimy.

The detergent composition of the present invention contains the above-mentioned components as essential components, but other components can be appropriately added to the composition within a range that achieves the object of the present invention.

That is, anionic surfactants such as alkyl sulfate ester salts, nonionic surfactants such as fatty acid alkanol amides, polyoxyethylene alkyl ethers and alkylamine oxides, amphoteric surfactants such as alkylamidopropyl betaine, higher alcohols, Silicone oil,
Lanolin derivatives, protein derivatives, oily components such as fatty acid esters of polyethylene glycol, water-soluble polymers such as hydroxypropylmethylcellulose and hydroxycellulose, polymer JR (manufactured by Union Carbide Corporation), polycoat NH (manufactured by Henkel), mercoat 550 (Merck), Gaff Cut 755N (GA
Company F) and other cationic polymers, glycerin, sorbitol, propylene glycol and other polyhydric alcohols, vitamins and other drugs, preservatives, bactericides, pH adjusters, UV absorbers, lecithin, gelatin and other animal and plant extracts Alternatively, derivatives thereof, pigments, fragrances, fine polymer powders of nylon, polyethylene and the like can be mentioned, and one or more of these can be blended.

The detergent composition of the present invention is not particularly limited in its dosage form, and can be applied to shampoos, body shampoos, facial cleansers and the like. Among them, the makeup remover face wash is most preferable in order to maximize the excellent makeup removing effect of the present invention.

[0015]

The present invention will be described below with reference to examples, but the present invention is not limited to these examples. The test method used in this example is as follows.

(Detergency test method) 5% × 5 cm wool muslin cloth with 7% lanolin and 0.005% Sudan III
0.4 ml of chloroform solution of
Approximately 100 parts of this stain cloth containing 40 ml of 3% detergent solution
Place in a ml glass cylinder, shake in a constant temperature bath at 40 ° C for 15 minutes, then rinse the contaminated cloth thoroughly under running water,
After drying, the reflectance was examined and the cleaning rate was calculated by the following formula.

[Equation 1] Moreover, the evaluation criteria were set as follows.

(Skin irritation (protein denaturation rate) test method) The ovalbumin denaturation rate when a sample was added to an ovalbumin pH7 buffer solution at a sample concentration of 1% using aqueous high performance liquid chromatography, It measured using the absorption peak of 220 nm.

[Equation 2] Ho… The height of the 220 nm absorption peak of ovalbumin Hs… 22 when the sample was added to the ovalbumin buffer solution
The height evaluation standard of the 0 nm absorption peak was set as follows. ◎ ... Ovalbumin denaturation rate of less than 30% ◯ ... Ovalbumin denaturation rate of 30% or more and less than 60% △ ... Ovalbumin denaturation rate of 60% or more and less than 80% × ... Ovalbumin denaturation rate of 80% or more

(Practical test: Makeup remover effect) 20 women (specialist panelists) sensory compared the "makeup remover effect" after continuously using the face wash composition for one week, and evaluated according to the following criteria. . Evaluation code Rating standard ◎… When there are 18 or more people who answered “makeup has fallen” ○… 〃 14 to 17 people △… 〃 8 to 13 people ×… “makeup has fallen” If there are less than 7 people

(Practical Test: Feeling of Use) Twenty women (specialist panelists) judged whether the "feel of use (fresh feel, slimy feel, etc.)" was good or bad after continuously using the cleaning composition for one week. The following criteria evaluated. Symbol Rating Standard ◎… When 18 or more people answered that they are good ○… 〃 14 to 17 people △… 〃 8 to 13 people ×… 〃 7 people or less

Examples 1 to 7 and Comparative Examples 1 to 5 Makeup remover cleansing compositions having the composition shown in the upper part of Tables 1 and 2 were prepared by the usual method, and the above test was conducted to obtain the results shown in Tables 1 and 2. The results are shown in the lower row.

[Table 1]

[Table 2]

As is clear from Examples 1 to 7, all the makeup remover cleansing compositions of the present invention showed excellent performance. On the other hand, polyoxyethylene alkyl ether acetate and N-acyl glutamate or N which are essential components
-Without acyl aspartate (Comparative Example 3 ~
5), or when the neutralization ratio of polyoxyethylene alkyl ether acetic acid was outside the range of the present invention (Comparative Examples 1 and 2), the performance was inferior and the object of the present invention could not be achieved.

Examples 8 to 10 Shampoo compositions having the formulations shown in the upper row of Table 3 were prepared by the usual method, and the above test was conducted. The results are shown in the lower row of Table 3.

[Table 3]

As is clear from Examples 8 to 10, the shampoo compositions of the present invention all showed excellent performance.

Examples 11 to 13 A body shampoo composition having the composition shown in the upper row of Table 4 was prepared by a usual method, and the above test was conducted. The results are shown in the lower row of Table 4.

[Table 4]

As is clear from Examples 11 to 13, the body shampoo compositions of the present invention all showed excellent performance.

[0026]

Industrial Applicability As described above, the present invention has excellent detergency and is mild in action on the skin.
Further, it is clear that the feeling of the product after washing does not give a slimy feel, and a detergent composition having a good feeling in use is provided.

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Claims (1)

(57) [Claims] 1. General formula (A) embedded image R—O— (CH ₂ CH ₂ O) n—CH ₂ COOH (wherein R is an alkyl group having 12 to 18 carbon atoms, and n is 2 to 2).
The number of 10 is shown. ), The polyoxyethylene alkyl ether acetic acid represented by the formula (1) is neutralized with an alkali metal, ammonium or alkanolamine at a neutralization ratio of 30 to 70%, and a polyoxyethylene alkyl ether acetate represented by the general formula (B) 2] (Wherein R is an alkyl group or an alkenyl group having 7 to 21 carbon atoms, M ₁ and M ₂ are hydrogen or Na ⁺ , K ⁺ , NH ₄ ⁺ ,
Alternatively, it represents an alkanol ammonium ion. However, M ₁ and M ₂ are not hydrogen at the same time. ) Or an N-acylglutamate represented by the general formula (C): (In the formula, R'is an alkyl group or an alkenyl group having 7 to 21 carbon atoms, M ₃ and M ₄ are hydrogen or Na ⁺ , K ⁺ , N
Represents H ₄ ⁺ or alkanol ammonium ion. However, M ₃ and M ₄ are not hydrogen at the same time. And an N-acyl aspartate represented by the formula (1).